DIRECT METAL LASER SINTERING TO DEVELOP COMPLEX CONTOURS OF AlSi10Mg ALUMINIUM ALLOY — BUILD PARAMETERS OPTIMIZATION

M. Arockia Jaswin, R. Geetha, M. Saravanan and R. P. Elvin
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M. Arockia Jaswin: Department of Mechanical Engineering, Velammal Engineering College, Chennai 600 066, India
R. Geetha: Department of Mechanical Engineering, Velammal Engineering College, Chennai 600 066, India
M. Saravanan: Department of Mechanical Engineering, Velammal Engineering College, Chennai 600 066, India
R. P. Elvin: Department of Mechanical Engineering, Velammal Engineering College, Chennai 600 066, India

Surface Review and Letters (SRL), 2024, vol. 31, issue 12, 1-13

Abstract: In the recent years, Additive Manufacturing (AM) has become a very demanding process utilized by majority of the manufacturing industries due to its complex geometrical capabilities, high accuracy, minimal material usage and better build quality. Among the various types of AM methods, Direct Metal Laser Sintering (DMLS) is a feasible method with many applications and a lot of scope for research. This paper focuses on optimizing the important parameters of DMLS process for better build quality of AlSi10Mg Aluminium alloy. The parameters identified are laser power, hatch distance, scanning speed, and layer thickness. Grey–Taguchi multi response optimization method has been used. Experimental specimens were fabricated and tested. Micro-Vickers hardness and average surface roughness were studied. Experiments were analyzed to determine the best combination of parameters of the DMLS process. A detailed micro-structural study was conducted on the specimens. Also, crystallographic study was made. The resultant specimen thus produced had a better build quality along with satisfying micro-structural characteristics.

Keywords: Additive manufacturing; direct metal laser sintering (DMLS); Grey–Taguchi multi response optimization; micro-vickers hardness; surface roughness (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0218625X24500963

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